Strauss-Kahn made me perform 'animal' sex act: prostitute

A Belgian prostitute has accused disgraced former IMF boss Dominique Strauss-Khan of forcing her to perform an "animal" sex act.

Sandrine Vandenschrik was testifying against Strauss-Kahn in court in the French city of Lille, where he and 13 others are charged with organising illegal sex parties involving seven women between 2008 and 2011.

"Every time I see his photo or see him, I revisit this impalement that tears me up inside because no other client would dare do that to me,” Sandrine Vandenschrik said on Wednesday.

"I cried a lot… (he would) have been aware that I was unhappy," she said.

It is legal to pay for sex in France but against the law to solicit or run a prostitution business, which could make Strauss-Kahn guilty of "pimping" under French law.

Dominique Strauss-Kahn. (Getty)

Strauss-Kahn, 65, did not deny he had sex with Vandenschrik but said he had no idea Vandenschrik was a prostitute, despite having met her at a swingers club where she worked as an exotic dancer.

He said he believed the women to be "a group of friends" and insisted if he had known they were prostitutes he "would have totally stopped participating in these soirees."